Amazon Elastic Block Store Concepts: Difference between revisions
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* [[Amazon Elastic Block Storage#Subjects|Amazon Elastic Block Storage]] | * [[Amazon Elastic Block Storage#Subjects|Amazon Elastic Block Storage]] | ||
=Block Device Mapping= | |||
* External: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/block-device-mapping-concepts.html | |||
Each instance has a root device volume. | |||
A block device is a storage device that moves data in sequences of bytes or bits (blocks). These devices support random access and generally use buffered I/O. Examples include hard disks, CD-ROM drives, and flash drives. A block device can be physically attached to a computer or accessed remotely as if it were physically attached to the computer. | |||
Amazon EC2 supports two types of block devices: | |||
* Instance store volumes - virtual devices whose underlying hardware is physically attached to the host computer for the instance. | |||
* EBS volumes - remote storage devices. | |||
=Volume= | |||
Each volume has a volume ID | |||
=Snapshot= | |||
Revision as of 00:03, 12 October 2016
Internal
Block Device Mapping
Each instance has a root device volume.
A block device is a storage device that moves data in sequences of bytes or bits (blocks). These devices support random access and generally use buffered I/O. Examples include hard disks, CD-ROM drives, and flash drives. A block device can be physically attached to a computer or accessed remotely as if it were physically attached to the computer.
Amazon EC2 supports two types of block devices:
- Instance store volumes - virtual devices whose underlying hardware is physically attached to the host computer for the instance.
- EBS volumes - remote storage devices.
Volume
Each volume has a volume ID